This book charts the story of the lesser known aces who flew the mighty Republic aircraft as a tactical fighter-bomber with the Ninth Air Force, rather than as a long-range escort. It also details the exploits of the Mediterranean-based 325th FG, which was the only P-47 group within the strategic Fifteenth Air Force. Thunderbolt aces within the Ninth Air Force, particularly, were rare, despite some 15 groups flying the fighter. Supporting troops on the ground rather than searching out aerial foes, was the name of the game for the men of the Ninth. However, with the Luftwaffe often opposing such sorties through to April 1945, more than 20 pilots had the opportunity to score five or more kills and 'make ace'.

Although best remembered for its exploits with Eighth Air Force units, the Mustang, in its various marks, actually made its combat debut firstly with the Royal Air Force in the Army co-operation role, and then with the USAAF's tactically-optimised Ninth and Fifteenth Air Forces. Seeing action in Western Europe and the Mediterranean, pilots like Glenn T Eagleston, John J Voll and Samuel J Brown notched up impressive scores flying P-51Bs and Ds with the 354th, 31st and 52nd Fighter Groups. Rarely given the exposure enjoyed by their high-scoring brethren in the 'Mighty Eighth', this volume at last sets the record straight on Europe's remaining Mustang aces.

The P-47 Thunderbolt, originally designed as a high-altitude interceptor, became the principal US fighter–bomber of World War II. First adapted to the ground attack role by units of the Twelfth Air Force in early 1944, the strength and durability of the P-47 airframe, along with its massive size, earned it the nickname 'Juggernaut', which was quickly shortened to 'Jug' throughout the MTO and ETO. By October 1943, with the creation of the Fifteenth Air Force, nearly half of the Twelfth's fighter groups would be retasked with strategic escort missions, leaving six groups to perform close air support and interdiction missions throughout the entire Mediterranean theatre. The groups inflicted incredible damage on the enemy's transport routes in particular, using rockets, bombs, napalm and machine-gun rounds to down bridges, blow up tunnels and strafe trains. Myriad first-hand accounts and period photography reveal the spectacular success enjoyed by the Thunderbolt in the MTO in the final year of the war.

The US aviation industry produced three great fighter designs to equip its burgeoning army air force during World War 2, and of this trio, Republic's P-47 Thunderbolt was easily the heaviest. Powered, crucially, by a turbocharged Pratt & Whitney R-2800 Double Wasp radial engine that produced 2000 hp, the first production fighters reached the 56th FG in June 1942, and six months later the group joined the Eight Air Force in Britain. The arrival of the first P-47Cs in mid-1943 addressed the problem of the aircraft's short combat radius, as this model could be fitted with an external tank. Slowly, as combat tactics evolved in units like the 56th and 78th FGs, pilots learnt how best to fly the Thunderbolt in order to effectively counter the more nimble Luftwaffe fighters.

This bibliography lists published and printed unit histories for the United States Air Force and Its Antecedents, including Air Divisions, Wings, Groups, Squadrons, Aviation Engineers, and the Women's Army Corps.